Reference Article: Facts about Eris, the first dwarf planet discovered. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Eris was one of the ...

Eris, the dwarf planet whose 2005 discovery led to Pluto losing its status as a planet, has passed in front of a star, providing astronomers with the clearest view of it since it was identified.

Eris is the largest known dwarf planet in the solar system. It is a trans-Neptunian object (TNO), orbiting the Sun in a region of space known as the scattered disc, just beyond the Kuiper belt ...

Close to 18 years ago, astronomers spotted a miniature, icy world named Eris billions of miles beyond Neptune. But unlike its dwarf planet cousin Pluto — which New Horizons promoted to a rich ...

These time-lapse images of a newfound dwarf planet in our solar system, formerly known as 2003 UB313 and now called Eris, were taken using the Samuel Oschin Telescope at the Palomar Observatory.

Eris is about the size of Pluto but around 50% farther from the sun. The discovery of Eris in the Kuiper Belt beyond Neptune in 2005 prompted the debate that ultimately reclassified Pluto as a dwarf ...

Eris has a moon called Dysnomia that circles the dwarf planet every 16 days. In Greek mythology, Dysnomia is the name of one of Eris’s daughters and means “anarchy.” 5.

Dwarf planet Eris, similar in size to its better-known cosmic cousin Pluto, has remained an enigma since being discovered in 2005 lurking in the solar system's far reaches. While Pluto was ...

2003 UB313, aka 'Xena,' whose discovery led to Pluto's demotion from planet status, officially renamed 'Eris' after Greek goddess of discord.